<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import resize from './mixins/resize'
import { listRlzy } from "@/api/yljc/rlzy";

const animationDuration = 6000

export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '300px'
    }
  },
  data() {
    return {
      // chart: null
      MapList: [],
      rows: [],
      RlzyList: [],
      rlzyName: [],
      numPeople: [],
      chart: null,
      queryParams: {
        rlzyName: undefined,
        numPeople: undefined,
      }
    };
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart()
      this.getList()
    })
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    getList() {
      this.loading = true;
      listRlzy(this.queryParams).then(response => {
        this.MapList =response.rows;
        console.log( "柱状图数据：" + this.MapList);    //有获取到后台数据,javaScript格式
        let MapList = this.MapList;
        if(MapList){
          let obj = eval(MapList);
          for(let i=0;i<obj.length;i++){  //for循环遍历数组数据
            this.rlzyName.push(MapList[i].rlzyName);
            this.numPeople.push(MapList[i].numPeople);
          }
        }
        //动态插入数据时，数据在这里更新
        this.chart.setOption({
          xAxis: {
            data: this.rlzyName
          },
          series: [
            {
              name: '人数',
              data: this.numPeople,
            }]
        });
      });
    },
    initChart() {
      this.chart = echarts.init(this.$el, 'macarons')

      this.chart.setOption({
        tooltip: {
          trigger: 'axis',
          axisPointer: { // 坐标轴指示器，坐标轴触发有效
            type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
          }
        },
        grid: {
          top: 10,
          left: '2%',
          right: '2%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [{
          type: 'category',
          // data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
          data: this.rlzyName,
          axisTick: {
            alignWithLabel: true
          }
        }],
        yAxis: [{
          type: 'value',
          axisTick: {
            show: false
          }
        }],
        series: [{
          name: '人数',
          type: 'bar',
          stack: 'vistors',
          barWidth: '60%',
          // data: [79, 52, 200, 334, 390, 330, 220],
          data: this.numPeople,
          animationDuration
        }]
      })
    }
  }
}
</script>
